Honda's SH-4WD system
Honda's SH-AWD system is unique in the industry. It is available on the luxurious Honda Legend and it does not have any center differential or any limited-slip differential.
All the mechanicals is mounted at the rear axle and the drive from propeller shaft is sent to an accelerator first.
The latter uses planetary gears to step up the rotation speed, creating a speed difference between the input and output shaft. By applying electromagnetic clutches, the speed difference can transfer driving torque to the rear axle.
The electromagnetic multi-plate clutches are mounted behind the accelerator. There are 2 clutches, each responsible for one rear wheel. When the right clutch engage, more torque will be sent to the left rear wheel via the conventional differential.
When both clutches engage, more torque will be sent to the rear axle and in this way, SH-AWD can very the torque split between front and rear axle, as well as between the rear wheels.
For Honda Legend equipped with SH-AWD, it normally runs with 70% torque distributed to the front wheels.
Under acceleration and braking, up to 70% may be sent to the rear axle to generate more traction. During cornering, to reduce understeer, more torque will be distributed to the outside rear wheel. At extreme cases, the outside rear wheel can take 70% of the engine output, while the inside rear wheel 0% and the front wheels get the remaining 30%.
Author: AL
Source: Autolatest & AZ
The latter uses planetary gears to step up the rotation speed, creating a speed difference between the input and output shaft. By applying electromagnetic clutches, the speed difference can transfer driving torque to the rear axle.
The electromagnetic multi-plate clutches are mounted behind the accelerator. There are 2 clutches, each responsible for one rear wheel. When the right clutch engage, more torque will be sent to the left rear wheel via the conventional differential.
When both clutches engage, more torque will be sent to the rear axle and in this way, SH-AWD can very the torque split between front and rear axle, as well as between the rear wheels.
For Honda Legend equipped with SH-AWD, it normally runs with 70% torque distributed to the front wheels.
Under acceleration and braking, up to 70% may be sent to the rear axle to generate more traction. During cornering, to reduce understeer, more torque will be distributed to the outside rear wheel. At extreme cases, the outside rear wheel can take 70% of the engine output, while the inside rear wheel 0% and the front wheels get the remaining 30%.
Author: AL
Source: Autolatest & AZ
SEARCH IN EDITORIALS
NEWS PHOTO GALLERY
Published date: 13.01.2009 | 05:48 EET
Latest editorials:
Latest editorial 24.05.2011 | 07:38 EEST
